November 6, 2026 - 6:30 am

SANTA CLARA, Calif. — Klay Kubiak suspects his father is rooting Sunday for a postgame handshake when he coaches against his brother, Klint.

The victor of their matchup? Irrelevant for Gary, or so his middle son suspects. “Rooting for good competition,” Klay said, between the San Francisco 49ers and the Las Vegas Raiders .

“We just see it as a blessing.”

This iteration of the Battle of the Bay matches the brothers Kubiak, Klay as the second-year 49ers offensive coordinator and Klint as the first-year Raiders coach. They worked together for San Francisco under coach Kyle Shanahan in 2023, Klay as assistant quarterbacks coach and Klint as the passing game coordinator.

They’ve coached against each other before, three times squaring off in 2025 with Klint calling plays for the Seattle Seahawks, among San Francisco’s three NFC West rivals.

The matchups are always sentimental.

Said Klay after practice Thursday in the interview room at Levi’s Stadium, the site of the Week 9 Battle…